Weather in Rio de Janeiro

Calculated from weather data of Cabo Frio Airport (SBCB) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	30.5	29.5	28.8	29.1	30.3	29.5
February	30.2	30.3	31.0	28.8	29.1	28.8
March	30.2	29.3	30.3	30.5	30.1	27.8
April	28.4	28.3	27.6	28.0	27.1	27.1
May	27.0	28.3	25.8	26.3	26.1	25.8
June	26.6	27.8	26.0	24.6	24.8	26.6
July	25.8	25.1	25.1	26.6	24.1	25.8
August	25.4	26.0	25.8	24.3	24.8	25.6
September	26.6	27.6	26.8	23.8	25.6	27.3
October	26.9	26.6	26.8	27.1	24.5	27.0
November	27.4		28.5	26.1	25.5	27.0
December	29.1		29.6	27.5	27.3	29.1
Average	27.8	27.9	27.6	26.9	26.6	27.3

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	23.5	24	23	24	24	24
February	23.7	24	24	24	23	23
March	23.7	24	24	24	23	23
April	22.3	22	22	23	22	22
May	20.4	21	20	20	20	20
June	19.7	20	19	19	20	20
July	18.9	19	19	20	17	19
August	19.1	20	20	19	19	19
September	20.5	22	21	19	21	21
October	21.7	22	22	22	20	22
November	21.8		23	22	21	22
December	23.3		24	23	23	24
Average	21.5	21.7	21.7	21.3	21.0	21.4

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
30 °C or warmer	61	69	44	49	50
25 °C or warmer	233	267	238	222	274
20 °C or warmer	303	362	351	359	365
0 °C or colder	0	0	0	0	0

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	6.7	12	13	12	1	8
February	4.7	4	1	8	5	9
March	3.0	10	0	1	1	8
April	2.9	3	6	3	4	2
May	4.7	3	8	2	4	4
June	2.3	0	2	3	4	1
July	2.0	1	4	0	3	2
August	5.3	5	11	3	3	6
September	3.1	1	2	6	1	3
October	6.5	11	6	2	13	7
November	7.5		4	11	9	3
December	4.8		3	7	7	7
Average	4.5	5.0	4.9	4.9	4.4	4.9

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (km/h)

Month	Average	2024	2023	2022	2021	2020
January	19.1	16	19	20	23	16
February	16.9	18	18	16	16	18
March	17.2	18	20	21	17	16
April	16.2	17	17	17	19	16
May	15.3	15	16	19	10	16
June	14.7	14	15	16	17	15
July	16.5	13	18	20	17	17
August	19.3	18	17	21	22	19
September	22.0	24	24	20	22	19
October	19.8	19	19	21	18	20
November	19.3		20	19	18	18
December	18.5		20	22	17	15
Average	17.9	17.1	18.6	19.2	18.0	16.9

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	E	E	E	NE	SE
February	E	E	E	E	E
March	SE	E	E	E	SE
April	E	E	SE	SW	SW
May	E	E	N	E	NE
June	NE	E	E	NE	NE
July	SW	E	NE	SW	NE
August	NE	E	E	NE	NE
September	NE	NE	E	E	NE
October	E	E	E	E	E
November		E	E	E	E
December		E	E	E	E

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Rio de Janeiro weather Q&A

What is the warmest month in Rio de Janeiro?

The warmest month is January with an average temperature of 31 °C over the past years.

What is the coldest month in Rio de Janeiro?

The coldest month is August with an average daytime temperature of 25 °C in the past few years.

Which month is the wettest in Rio de Janeiro?

Chance of precipitation is the highest in November with a probability of around 7.6 %.

Which month is the driest in Rio de Janeiro?

The least rainfall and snow can be expected in July. The probability is about 2.0 %.